Some see QKD as the end-game - all other quantum comms applications are vague and lacking usefulness (e.g. quantum digital-payments, quantum money, etc). Others see trusted-node QKD networks as a stepping stone ultimately leading to a secure network based on quantum repeaters. Yet others believe that the security benefits are not worth-while since PQC is a more practical solution, and see trusted node QKD networks as merely an early stage testbed for a quantum internet with the true goal being to connect quantum computers. Which of these viewpoints is the most realistic or are they all valid? Or, are none of them actually likely to find long term applications?
Tobias Gehring, Technical University of Denmark, Denmark
Gregory Kanter, NuCrypt, United States
Andrew Lord, BT Exact, United Kingdom